Waterproof lock-seam for roofing-paper.



F. E. SMITH. WATERPROOF LocK SPAM P011 RooPING PAPER.

` APPLICATION FILED MAY 10, 1909.

Patented Peb. 21, 1911.v

UNITED STATES AT o FRANK n. SMITH, or SAN-BRUNO, CALIFORNIA.`

WATERPROOF LOCK-SEAM FOR ROOFING-PAPER.

Speccation of LettersIPatent` Patented Feb. 21, 1911.

Application led May 10, 1909. Serial No. 494,985.

To all twho/m, 'it may concern:

Be it known that I, FRANK E. SMITH, citizen of the United States,residing at San Bruno,y in the count-y of San Mateo and State ofCalifornia, have invented a new and useful Improvement in l/VaterproofLock-Scams for Roofing-Paper, of which the following is a specificationin such full and clear terms as will enable those skilled in the art to"construct and use the same. I

My invention relates to the art of roofing with paper, and has for itsobject to provide novel means for rendering the seams of paper roofingwater-proof.

I attain my object by the means illustrated in the accompanying drawingof which- Figure 1 is a sectional view of my device in place. Fig. 2 isa Sectional view of a modied form for use along the outer edges'of paperroofing. Fig. '3 is a sectional View of my device in position ready toreceiveran adjoining sheet of paper. Fig. 4 is a `perspective view of mydevice. A

rl.`he same numeral of reference marks the same partthroughout thevarious views.`

In general terms my invention comprises a sheet of metal adapted to lockand protect the seams in paper roofing.

In detail 'it comprises a sheetof metal 1 -shaped to have a rearwardlyprojecting portion 2, a forwardly projecting portion 3, and

Y an intermediate portion 4. rl`he rearwardly projecting portion isprovided with a ridge 5 placed substantially as shown in Fig. 1. Theintermediate portion is provided with ridges Grand .7 and the forwardlyprojecting portion is provided with a ridge 8. All

the ridges are arranged vsubstantially as shown in Fig. 1, so thatridges 5 and 6 will crimp the paper 9 at the point 10 and ridges 7 and 8will crimp the 'paperll at the point. 12, when the paper sheets areinserted in the spaces shown and the parts of my device are driven intothe position shown. A nail 13 is driven between the intermediateportion, through the rearwardly projecting portion and into the roof.

The modified form of my device which is to be used around the extremeouter edges of the paper comprises an under portion 14 and a top portion15. The 'top portion is provided with a ridge 16 which partially Patentof the United States is- In a device of the character described awater-proof locking device for the seams of roofing paper comprising asheet of metal having a rearwardly projecting portion provided with aridge, an intermediate portion provided with a forward ridge and a rearridge, a'forwardly projecting portion provided with a ridge, the ridgeon said rearwardly projecting portion cooperating with the rea-r ridgeof the intermediate portion to crimp one of the paper sheets and a ridgeon the forwardly projecting portion coperatl ing with the forward ridgeof the intermediate portion to crimp the adjoining sheet.

In testimony whereof Ifhave set my hand this 19th day of April A.D.-1909, in the presence ofthe two ysubscribed witnesses.

FRANK E. SMITH.

Witnesses:

FRANK P. MEDINA, IVILLIAM C. MELEE.

After the nails are

